Hong, H. Y. Kim, D. H. Won, S. O. Park, K. 2024-01-19T13:32:04Z 2024-01-19T13:32:04Z 2022-01-10 2021-11 2238-7854 https://pubs.kist.re.kr/handle/201004/116216 We report on the effect of Ce4+ doping on the thermoelectric properties of Bi2-xCexO2Se (0 < x < 0.15). Bi(2-x)CexO(2)Se crystallizes in the tetragonal crystal structure (I4/mmm space group). The doping of Ce4+ for Bi3+ leads to a significant enhancement of electrical conductivity, which is mainly attributed to the increased electron concentration and the decreased band-gap energy. The Ce4+ doping decreases the absolute Seebeck coefficient and increases the thermal conductivity. The highest value of ZT (0.26) is obtained for Bi1.9Ce0.1O2Se at 773 K, which is 37% larger than that of pure Bi2O2Se (0.19) at 773 K. We believe that the Ce4+ doping is highly effective to enhance the thermoelectric properties of Bi2O2Se. (C) 2021 The Author(s). Published by Elsevier B.V. English ELSEVIER Enhancement of the thermoelectric performance of n - type Bi2O2Se by Ce4+ doping Article 10.1016/j.jmrt.2021.10.002 1 JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, v.15, pp.4161 - 4172 JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 15 4161 4172 N scie scopus 000712077200008 2-s2.0-85117965862 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science Metallurgy & Metallurgical Engineering Article THERMAL TRANSPORT-PROPERTIES CARRIER CONCENTRATION GRAIN-GROWTH THIN-FILMS CERAMICS MOBILITY PBTE BICUSEO ENERGY OXIDE Sintering Synthesis Microstructure X-ray diffraction Thermoelectric properties Ceramics